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(No Model.) 2 S heets'-Sheet 2.

O. G. BUTTRIOK & T. B. FLANDERS.

BOLSTER FOR SPINNING SPINDLES.

No. 361,611. Patented Apr. 19, 1887.-

WITNESSES: l/Vl/E/VTOHS m 4. W04. W 0 QM. A 0 ZK W Umrsn STATES PATENT Grrrca.

CHARLES Gr. BUT'IRIGK AND TIMOTHY B. FLANDERS OF HOLYOKEdl/IASS.

BOLSTER FOR SPINNlNG-SPINDLES.

SPECIFICATION forming part of Letters Patent No. 361,611, dated April 19, 1887. Application filed October 2, 1885. Serial No. 178,816. No model.)

To all whom it may concern:

Be it known that we, CHARLES G. Burr- RICK and TIMOTHY B. FLANDERS, both of H01- yoke, in the county of Hampden and State of Massachusetts, have invented a new and useful Improvement in Bolsters for Spinning- Spindles, of which the following is a specification.

Our invention relates to improvements in spindle-bolsters; and the objects of our improvements are, first, to provide a spindle bolster which is constructed in sections and which will admit of being taken apart for the renewing or replacing of such parts as are subjected to wear, and thereby avoid the necessity of re placing the entire bolster when the bearing portion only becomes worn, thus making a saving in the expense for repairs; second, to provlde means for connecting said bolster, with its ease, and, third, to provide a bolster-case which contains means for connecting it with a bolster, substantially as hereinafter described, and which will permit of the ready removal of the bolster from its case when'worn and replacing it by a new one with but slight de tention to machinery. WVe accomplish these objects by the mechanism illustrated in the accompanying drawings, of which- Figure l is a vertical section of a boltstercase with a bolster within the case in elevation; and Fig. 2 is a sectional elevation of the enlarged portion of the bolster-case, with section 22 and a part of section 15 in elevation, a partof each section being cut away to more readily show the method of connecting the sections together. I

In the drawings, 2 represents the bolstercase, whose lower part, 3, when inuse, is fixed in the rail of an ordinary spinning-frame, preferably by a set-screw passing transversely into said rail. Above this part the case is enlarged and provided witha shoulder, 7, on the under side, and which rests on the top of said rail. At the upper portion of this enlarged part an oil-cup, 5, is formed. Above this oil-cup the case is madetapering for a portion of its length, as shown at 30. Above the tapering part the case is practically straight to the end.

WVe bore out the case from the lower end to a point, 4, of a uniform diameter, and then slightlyreducethediametertopoint13. Upon for the lubrication of the spindle.

is again reduced, forming shoulder 9, and still further reduced, and continuing of practically the same diameter to near the top, when it is again reduced, forming a ring, 12, which forms a support for the upper end of bolster 22. We formone or more grooves, 26, in said ring to permit the return of oil which may be carried off the top of the bolster-tube 22,and then enlarge the size of the bore to maintain the same diameter as immediately below the ring 12. We also provide the case with an oil- .duct, 6,leading from the exterior of said case into the reservoir 10 or interior of section 15.

" Weimake the bolster in sections 15 and 22.

Section 15 is provided with an external screwthread, 8, near the middle portion for securing said section in the bolster-case. Below the said screw-thread lugs 17 are formed, which are adapted to engage with a key, and by which the said section 15 is screwed into the bolsterease. vided with a shoulder, 18, which engages with shoulder 9 in bolster-case 2. We bore out the said section of uniform diameter. A slot, 25, is formed at the upper end, which forms a channel between the reservoir 10 and that portion of the bolster-ease that surrounds the bolster-tube 22. This slot also communicates with the interior of section 15 for the passage of oil. Above the screw-thread 8 an oil-hole, 20, is formed, which permits oil contained inreservoir 10 to flow into the interior of section 15 of section 15 an internal screw-thread, 19, is formed, which is adapted to engage with an external screw-thread on thelower end of bolster-tube 22.

Section or bolster 22 is a tube that is provided at its lower end with an external screwthread, 23, which is adapted to engage with internal screw-thread, 19, in end of section 15. The opposite end of said tube is provided with one or more slots, 24, for the escape of oil which may be carried upward by the action of the spindle. Said tube extends upward to near the top of the bolster-case 2. The extreme upper end is beveled.

\Ve insert the bolster, after the sections have The upper end of said section is pro At the top in said case.

been joined together, into the case from the lower end of the latter until the screw-threads 8 and 16 engage, when itis carried upward by said screw-threads until the shoulder 18 of section 15 impinges against internal shoulder, 9, When thus secured within the case, the upper end of bolster-tube 22 is held centrally and securely by the ring 12 in said case at its upper end.

The oil-cup is not essential, and we may prefer to dispense with it and introduce oil directlyinto thereservoir or section 15 through the oil-duet 6. WVe can also dispense with the reservoir 10 and depend upon the interior of section 15 for receiving the oil, which it practically does, the reservoir being an additional medium.

We may prefer to form the ring 12 independent of the bolster-case or bolster and attach it to the bolster-tube.

While the lugs 17 are preferable, yet we do not confine ourselves to this precise method, as we can accomplish the purpose by other well-known mechanical means. We can also dispense with the oil-hole 20 in section 15 and make the slot 25 longer and accomplish the same purpose.

We may prefer to dispense with the slots '24 in upper end of bolster-tube 22 and permit the oil to flow over the top of said tube and through the slots 26 in ring 12 to the reservoir below.

While we prefer to connect the sections 15 and 22 by screw-threads, yet we do not confine ourselves to this method, as we can form the parts to snugly fit and force them together.

While the bolster and case are necessary to complete the article,'yet it will be observed that they can be manufactured in separate shops and by different manufacturers, and as the bolster is the part which is subjected to the most wear (the case lasting for years) it will be necessary to often replace the same. Therefore the manufacturer of the bolster will create considerable business, and the bolster thus become a separate article of manufacture; and, further, it will be observed that this improved bolster can be manufactured and used in a case whose contour may be 'varied to any style. The only requisite necessary would be to provide the interior of the case with means, substantially as described, for connecting with such a bolster.

We are aware that a device for spindlebearings was patented to us December 11, 1883, No. 289,971, which contains some of the elements set forth in this application; but in said device the bolster is made in one piece with an external oil-cup. This construction necessitates the renewing of ,the bolster in all its parts whenever the bearing portion becomes worn; besides, the manner of securing the bolster to its case by a nut at the bottom of thecase is objectionable, as the nut is liable to become loose by the jarring of the machinery and gradually drop down, thus causing the bolster to become loose and drop, thereby rendering the work imperfect and causing the stoppage of the machinery foradjustment, thus causing a loss of time and limitingthe production. This invention (in part) is intended to remedy these defects, first, by making the bolster in sections and securing them together so that they can be readily taken apart in order to renew that portion only which. constitutes the bearing, and thereby save the expense and time consequent upon the other construction set forth in Patent No. 289,971; second, this new manner of securing the bolster to its case by a screw-thread on the lower part of the bolster engaging with a screw-thread on the bolster-case is, we find, a

very great improvement, as the bolster, being screwed into the casein the direction in which the spindle revolves, becomes permanently fixed in its case, and is so maintained by the revolving spindle, the jar not having any effect on it whatever, consequently securing more perfect work and making a saving of time and expense.

What we claim, and desire to secure by Letters Patent, is

1. A bolster-case provided with the lower part, 3, external shoulder, 7, internal reservoir, 10, internal shoulder, 9, and means, such as described, for connecting wit-h a bolster, in combination with a bolster consisting of sections 15 and 22, said sections being secured together in the manner herein described, and section 15 provided with an external screwthread for connecting the bolster with said bolster-case, substantially as and for the purpose set forth.

2. A bolster consisting ofthe sections 15 and 22, said sections being secured together as herein described, and section 15 provided with an external screw-thread for connecting said bolster with the bolster-case, substantially as and for the purposeset forth.

3. A'bolster-case provided with an internal shoulder, 9, and internal screw-thread, 16,'in combination with a bolster provided with an external screw-thread, 8, adapted to engage with the internal screwlhread, 16, in said bolster-case, and by which said bolster is secured to its case, substantially as and for the purpose set forth.

CHARLES-G. BUTTRICK. TIMOTHY B. FLANDERS.

\Vitnesses: I

JAMES C. ENGLISH, CHARLES J. MoRsn. 

